Which of the following is an example of a lipid?
A) cholesterol B) chitin C) keratin D) cellulose
Answer: A
Biology & Microbiology
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The bulk of a plant is composed of:
1.dermal tissue 2.ground tissue 3.vascular tissue 4.All of these tissue types are equally common in most plants.
Biology & Microbiology
The pain produced in an internal organ may be perceived as occurring somewhere else. This is called
a. mixed nerve messages. b. referred pain. c. phantom pain. d. psychosomatic pain. e. hypochondria.
Biology & Microbiology
What animal has kidneys that are so efficient that it never has to drink water and can obtain all of its water from its food?
A. camel B. desert lizard C. gerbil D. pocket mouse E. kangaroo rat
Biology & Microbiology
Birds are the only modern amniotes with
a. wings. b. feathers. c. a four-chambered heart. d. ectothermic metabolism. e. more than one of these.
Biology & Microbiology